Black Forest Labs' open-weights image generation model with frontier performance, available for non-commercial local deployment
Settled by community votes across 3 shared challenges, with an AI judge weighing in on each.
FLUX.2 [dev]
24.5
arena score
#17 of 44 in Text-to-Image
Skill signature
Not enough comparable category data
The chart appears once both models have ratings across at least three shared arena categories.
Seedream 4.5
26.1
arena score
#10 of 44 in Text-to-Image
Vote tally
Where the votes landed
FLUX.2 [dev]
0.0%
win rate
Ties
0.0%
Seedream 4.5
100.0%
win rate
0.0%
0.0% ties
100.0%
Shared challenges
3
Challenge by challenge
The strongest take from each model on every shared challenge, with the AI judge's read.
Geometric Composition
Text-to-Image“A glass cube on a wooden table. Inside the cube is a small blue sphere. On top of the cube sits a red book. A green plant is behind the cube, partially visible through the glass. Soft window light from the left.”
FLUX.2 [dev]
Seedream 4.5
0% wins
0% ties
100% wins
AI Judge Analysis
FLUX.2 [dev]
- + Perfect adherence to all spatial instructions and object placements.
- + Highly realistic glass rendering with natural refractions of the background plant.
- + Excellent lighting that feels soft and atmospheric as requested.
Seedream 4.5
- + Good color accuracy for the requested elements.
- + Interesting light and shadow interplay on the table surface.
- − Failed to place the blue sphere inside the cube (it is stuck in the glass wall).
- − The cube geometry is physically impossible and distorted.
- − The book appears to be floating or poorly aligned with the top of the cube.
Verdict: FLUX.2 [dev] followed every detail of the prompt perfectly, creating a highly realistic scene with logical physics and beautiful glass refractions. Seedream 4.5 struggled significantly with the spatial relationships, failing to place the sphere inside the cube and producing a distorted, non-cubic glass object.
Candid Street Photography
Text-to-Image“A candid street photo of an elderly Japanese man repairing a red bicycle in light rain, reflections on wet pavement, shallow depth of field, 50mm lens, natural skin texture, imperfect framing, motion blur from passing cars, cinematic but realistic, no stylization.”
FLUX.2 [dev]
Seedream 4.5
0% wins
0% ties
100% wins
AI Judge Analysis
FLUX.2 [dev]
- + Excellent depiction of motion blur with passing cars
- + High realism in skin textures and clothing folds
- + Successfully captures the requested 'candid' and 'imperfect framing' look
- − The structural logic of the bicycle is chaotic and nonsensical near the bottom
- − The subject's hands are mangled and blending into the bike bars
Seedream 4.5
- + Clear action of using a tool to repair the bike chain
- + Strong cinematic lighting and atmosphere with better color grading
- + More coherent bicycle structure compared to the other model
- − The wrench is floating/not properly gripped by the hand
- − The rain effect looks like static vertical lines rather than realistic droplets
Verdict: FLUX.2 [dev] excels at the 'candid' photography aesthetic, with very realistic skin and background motion blur, but it fails significantly on the structural integrity of the bicycle. Seedream 4.5 provides a more focused narrative and better composition, and while it has some minor AI artifacts like a floating tool, it produces a much more coherent object (the bike) overall.
Adorable Baby Animals in Sunny Meadow
Text-to-Image“Hyper-photorealistic scene of fluffy baby animals—a golden retriever puppy, tabby kitten, baby bunny, and red fox kit—with big expressive eyes and ultra-detailed soft fur, playfully chasing butterflies and tumbling together in a lush wildflower meadow, warm golden sunrise light with god rays and dew sparkles, joyful wholesome vibe, 8K masterpiece.”
FLUX.2 [dev]
Seedream 4.5
AI judge analysis unavailable for this challenge.
Next steps
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ByteDance's latest image generation model unifying text-to-image and image editing in a single architecture, with improved text rendering and 30-40% faster generation than v4.0